Resilient wheel.



EWALD.

RESILIENT WHEEL- APPLICATlON FILED on. 7. 1915.

3 7 5 u f a 1, 4L w 9 2 1 3 n 7 e a u 2 h e t O m M a D1 mg n. a 1 Q 5 1 1 UNITED STATES PATENT orrrcn.

,215,511, Specification of I ietters Patent. 'Patented lfieb. 13, 1917. Application filed October 7,1915. Serial No. 54,531. i

To all whom 2'25 may concern: members 7, outward of their shoulders 9, Be it known that I, WILLIAM F. EWALD, are extended through coincident perforaa citizen of the United States, residing at tions, formed in the two rims'2 and 3, and Java, in the county of Walworth and State ave screw-threaded engagement therewith. 60 5 of South Dakota, have invented certain new y thus connecting the spoke members 7 to and useful Improvements in Resilient t e rims 2 and 3, said rims are securely l heels; and I do hereby declare the foll0wlocked against circumferential movement, ing to be a full, clear, and exact description one upon the other. v of the invention, such as will enable others Internally, the spoke members 8 are flared 65 10 skilled in the art to which it appertains to outwardly circumferentially with respect to make and use the same. the wheel, to allow a limited movement of y invention relates to improvements in the spoke members 7 therein, but closely enresilient wheels; and, to this end, it consists gage and hold said spoke members 7 against of the novel devices and combinations of movement therein transversely of the wheel. 70 devices hereinafter described and defined in his play of the spoke members 7 in the the claim. spoke members 8, circumferentially of the In the accompanying drawings, which wheel, together with loose joints and yieldillustrate the invention, like characters indiing parts of the wheel, permits the required cate like parts throughout the several views. eccentric movement of the wheel hub in re- 75 eferrlng to the drawings, spect to the rim thereof, to make the wheel Figure 1 is a side elevation of the imresilient under the action of the springs 10. proved wheel, some parts being broken away The tubular or inner spoke members 8 are and some parts being shown in section; fitted over the studs 1 and have screwig. 2 is a vertical section taken on the threaded engagement therewith. Coiled 80 irregular line 02 m of Fig l; springs 10, located in the spoke members 8.

1g. 3 is a view, partly in side elevation are compressed between the studs 4 and the and partly insection showing the suppleinner ends of the spoke members 7 and tend mental hub and the members of one of the to keep the two rims 2 and 3 and supplespokes separated; and mental hub 1 concentrically located with re- 85 Fig. 4 is a detail view, partly in elevation spect to each other.

and partly in section taken on the irregular All of the spoke members 8 are rigidly line at m of Fig. 1. v connected and held properly spaced, with The numeral 1 indicates a supplemental respect to each other. by a truss in the form hub and the numerals 2 and 3 indicate, reof a pair of laterally spaced fiat annular 90 spectively, inner and outer rims. The suprings 11, which embrace said innermembers plemental hub l is provided with a plurality 8, substantially at their longitudlnal cenofradial studs 4 circumferentially spaced, ters. These rings 11 are detachably conand it is also provided with a plurality of nected to each spoke member 8'by studs 12, transverse openings 5, that are rectangular integrally formed with said spoke members 95 in cross section and circumferentially spaced. 8 and seated in perforations 13 formed in s shown, the outer r1111 3 is made of said'rings. The ring members 11 of the metal and in cross section is in the form of truss are drawn toward each other and an I-beam. The inner rim 2 is also prefclamped onto the outer faces of'the spoke erably made of metal and is seated on the members 8 by clamps 14, in the form of nut- 100 outer rim between its inwardly projecting equipped draw bolts passed through alined flanges. A tire 6, of rubber or of other suitperforations 15, formed in the rings 11,;sub-

able material, is seated on the outerrim 3 stantially half way between each pair of between its outwardly projecting flanges. spokes. Obviously, this truss greatly he two rims 2 and3 are connected to strengthens the wheel. 1

the supplemental huh I by a plurality of A two-part hub 16 of standard construcmeta spoke's,' each comprising inner and tion is secured to the supplemental hub 1 by outer telescopically connected members 7 and nut-equipped bolts 17, passed through alined 8, respectively. Integrally formed with the perforations in the members of the said twospoke members 7, inward of their outer ends, part hub, which embrace the supplemental 5 are annular shoulders or collars 9, which hub 1, and through the transverse openings bear against the inner rims 2.- These spoke 5 in said s pplemental hub.

iVhat I claim is 2- A resilient wheel including a hub member having a plurality of radial studs circumferentially spaced and. externally screw- 5. threaded, a rim, and two-part spokes connecting the hub member and rim, the inner members of the spolies being tubular and having screw-threaded engagement with the studs of the hub member and the outer members thereof having screw-threaded engage- 10 ment with the rim, said outer member also having shoulders engaging the rim.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM F. EWALD. Witnesses:

EMILY T. HmKs,

P. H. Srrvr.

copies of this patent may be obtained for five cents each, by audressing the Commissioner of Iatenta,

Washington, D. C. 1 

